package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrdersMapper;
import com.itheima.reggie.mapper.ShoppingCartMapper;
import com.itheima.reggie.service.*;
import com.tencentcloudapi.cpdp.v20190820.models.Order;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.awt.*;
import java.math.BigDecimal;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {

    @Autowired
    ShoppingCartService shoppingCartService;


    @Autowired
    OrderDetailService orderDetailService;

    @Autowired
    UserService userService;

    @Autowired
    AddressBookService addressBookService;

    @Transactional
    public void submit(Orders orders){
        Long userID = BaseContext.getCurrentId();
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,userID);
        List<ShoppingCart> list = shoppingCartService.list(queryWrapper);

        if (list == null || list.size()==0){
            throw new CustomException("购物车为空，无法下单");
        }
        long orderId = IdWorker.getId();
        AtomicInteger atomicInteger = new AtomicInteger(0);

        List<OrderDetail> orderDetails = list.stream().map((item)->{
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setId(item.getId());
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            atomicInteger.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());

        User user = userService.getById(userID);
        AddressBook addressBook = addressBookService.getById(orders.getAddressBookId());

        if (addressBook == null){
            throw new CustomException("地址为空，无法下单");
        }

        //保存订单信息
        orders.setId(orderId);
        orders.setStatus(2);
        orders.setUserId(userID);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());

        orders.setAddress((addressBook.getProvinceName()==null?"":addressBook.getProvinceName())
        +(addressBook.getCityName()==null?"":addressBook.getCityName())
        +(addressBook.getDistrictName()==null?"":addressBook.getDistrictName())
        +(addressBook.getDetail()==null?"":addressBook.getDetail()));

        this.save(orders);

        orderDetailService.saveBatch(orderDetails);

        shoppingCartService.remove(queryWrapper);
    }

}
